testtable.java~48~

提供了常用的JAVA技术的示例

// 13-3 用 JTable 实 现 数 据 表 格 。
package TestTable;

import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.JScrollPane;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.JOptionPane;
import java.awt.*;
import java.awt.event.*;
import javax.swing.ImageIcon;

public class TestTable extends JFrame{
    private boolean debug=true;
    public TestTable() {
        super("成员记录");
        MyTableModel MyModel=new MyTableModel();
        JTable table=new JTable(MyModel);
        table.setPreferredScrollableViewportSize(new Dimension(500,70));
        JScrollPane scrollPane=new JScrollPane(table);
        getContentPane().add(scrollPane,BorderLayout.CENTER);

    }
    class MyTableModel extends AbstractTableModel{
        final String[] columnNames={"name","position","telephone","monthlypay","married"};
        final Object[][] data={
        {"wangdong","executive","001",new Integer(5000),new Boolean(false)},
        {"lihong","secretary","002",new Integer(5000),new Boolean(true)},
        {"kurui","manager","003",new Integer(5000),new Boolean(false)},
        {"zhaoxin","safeguard","004",new Integer(5000),new Boolean(true)},
        {"chenlei","salesman","005",new Integer(5000),new Boolean(false)}
        };

        // 下面三个方法继承接口 TableModel .
        public int getColumnCount(){
            return columnNames.length;
        }
        public int getRowCount(){
            return data.length;
        }
        public Object getValueAt(int row,int col){
            return data[row][col];
        }

        // 下面的方法继承类 AbstractTableModel 。
        public String getColumnName(int col){
            return columnNames[col];
        }
        public Class getColumnClass(int c){
            return getValueAt(0,c).getClass();
        }
        public boolean isCellEditable(int row,int col){
            if (col<0) return false;
            else       return true;
        }
       public void setValueAt(Object value,int row,int col){
           if (debug){
                System.out.println("setting value at "+row+","+col+
                                   "(an instance of "+value.getClass()+")");

            }
            if (data[0][col] instanceof Integer && !(value instanceof Integer)){
                try{
                    data[row][col]=new Integer(value.toString());
                    fireTableCellUpdated(row,col);
                }
                catch(Exception e){
                   System.out.println(e.getMessage());
                    JOptionPane.showMessageDialog(TestTable.this,"the \""+getColumnName(col)
                    +"\" column accepts only integer values.");
                }
            }
            else{
                data[row][col]=value;
                fireTableCellUpdated(row,col);
            }
            if(debug){
                System.out.println("new value of data");
                printDebugData();
            }
        }

        private void printDebugData(){
            int numRows=getRowCount();
            int numCols=getColumnCount();

            for(int i=0;i<numRows;i++){
                System.out.print("   row  "+i+":");
                for(int j=0;j<numCols;j++){
                  System.out.print("  "+data[i][j]);
                }System.out.println();
            }System.out.println("---------------------------"+
                                  "----------------------");
        }
    }

    public static void main(String[] args) {
      TestTable f = new TestTable();
      f.pack();
      f.addWindowListener(new WindowAdapter(){
          public void windowClosing(WindowEvent e){
            System.exit(0);
          }
        });
      f.setVisible(true);
    }
}